Investigation of thermodynamic properties of pseudospin-electron model in the gaussian fluctuation approximation

Details Investigation of thermodynamic properties of pseudospin-electron model in the gaussian fluctuation approximation Investigation of thermodynamic properties of pseudospin-electron model in the gaussian fluctuation approximation

2001-03-27

arxiv.org/abs/cond-mat/0103566v1

Physics

Condensed Matter

Statistical Mechanics

LaTex2e, 16 pages, 19 figures, 17 diagrams

Scientific paper

A method of consideration of gaussian fluctuations of the effective mean field within the framework of the GRPA scheme is applied to investigation of thermodynamical properties of a pseudospin-electron model (PEM). The grand canonical potential, pseudospin mean value, as well as the mean squares of fluctuations are calculated. Obtained results are compared with corresponding ones obtained by other approximations. An influence of the gaussian fluctuations of mean field on the thermodynamic properties of PEM is discussed.

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